TAMPA, Fla. -- Mayor Bob Buckhorn won't talk about Tampa's short yellow lights - among the shortest in all of Tampa Bay - but at least one councilwoman wants the city to take a closer look at the federal guidelines 10 News identified in its short yellow lights investigation.

FDOT mandates a 4.0-second yellow interval for a 40mph roadway, but Tampa says it has several lights set to 3.9 seconds because of its strict interpretation of an engineering formula.

An FDOT engineer confirmed for the city that the intersections of Hillsborough/Nebraska and 50th/Adamo are both not "the preferred 4.0 seconds shown on the (FDOT) chart." Meanwhile, USDOT standards suggest yellow light intervals at those key intersections should be in the 4.5/5.0 ballpark.

Last year, Tampa raked in $2.6 million from 15 RLC intersections. In all, the citations raised $7.6 million, with more than half of the money going to the state.

However, FDOT tells 10 News that any city that wishes to extend its yellow lights by an additional half-second to accommodate older drivers or large trucks, as recommended by the USDOT, would be allowed to.

In St. Petersburg, where several small yellow-light "malfunctions" plagued red-light camera intersections and other lights are set well below federal guidelines, Councilman Charlie Gerdes said he would use the 10 News report to once again push for longer yellow lights.